| (19) |
 |
|
(11) |
EP 0 702 031 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
10.04.1996 Bulletin 1996/15 |
| (43) |
Date of publication A2: |
|
20.03.1996 Bulletin 1996/12 |
| (22) |
Date of filing: 13.09.1995 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR GB |
| (30) |
Priority: |
16.09.1994 US 308027
17.01.1995 US 373729
|
| (71) |
Applicant: AIR PRODUCTS AND CHEMICALS, INC. |
|
Allentown, PA 18195-1501 (US) |
|
| (72) |
Inventors: |
|
- Cheng, John Tze-Chiang
Allentown, PA 18103 (US)
- Goldstein, Joel Erwin
Allentown, PA 18104 (US)
- Marten, Finn Lennart
Emmaus, PA 18049 (US)
- Mao, Chung-Ling
Emmaus, PA 18049 (US)
|
| (74) |
Representative: Sandmair, Kurt, Dr. Dr. |
|
Patentanwälte
Schwabe, Sandmair, Marx
Stuntzstrasse 16
D-81677 München
D-81677 München (DE) |
|
| |
|
| (54) |
Liquid absorbent composition for nonwoven binder applications |
(57) An aqueous polymer composition comprising 10 to 40 wt% of a polymer in water, the
polymer consisting essentially of 20-90 wt% α,β-ethylenically unsaturated carboxylic
acid monomer, 10-80 wt% one or more softening monomers, the aqueous composition being
adjusted to pH 4-6 with alkali metal hydroxide or alkaline earth metal hydroxide and
further containing 0.1 to 3 wt% zirconium crosslinking salt. Such aqueous compositions
can be applied to nonwoven and woven substrates to make superabsorbent products.